Datasheet

NC
AV
DD
V A
OUT
V C
OUT
V E
OUT
V G
OUT
NC
GND
V B
OUT
V D
OUT
V F
OUT
V H
OUT
1
2
3
4
5
6
18
17
16
15
14
13
DAC7678
7 8 9 10 11 12
24 23 22 21
20
19
NC
V /V
REFIN REFOUT
RSTSEL
ADDR1
ADDR0
CLR
NC
NC
LDAC
TWOC
SCL
SDA
(Thermal pad)
1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SCL
SDA
GND
V B
OUT
V D
OUT
V F
OUT
V H
OUT
CLR
LDAC
ADDR0
AV
DD
V A
OUT
V C
OUT
V E
OUT
V G
OUT
V /V
REFIN REFOUT
DAC7678
DAC7678
www.ti.com
SBAS493B FEBRUARY 2010REVISED JULY 2012
PIN CONFIGURATIONS
PW PACKAGE
RGE PACKAGE
TSSOP-16
QFN-24
(TOP VIEW)
(TOP VIEW)
(1) It is recommended to connect the thermal
pad to GND for better thermal dissipation.
PIN DESCRIPTIONS
16-PIN 24-PIN NAME DESCRIPTION
1 22 LDAC Load DACs.
2 11 ADDR0 Three-state address input 0
3 2 AV
DD
Power-supply input, 2.7V to 5.5V
4 3 V
OUT
A Analog output voltage from DAC A
5 4 V
OUT
C Analog output voltage from DAC C
6 5 V
OUT
E Analog output voltage from DAC E
7 6 V
OUT
G Analog output voltage from DAC G
V
REFIN
/
8 8 Positive reference input or reference output of 2.5V, if internal reference used.
V
REFOUT
9 12 CLR Asynchronous clear input
10 13 V
OUT
H Analog output voltage from DAC H
11 14 V
OUT
F Analog output voltage from DAC F
12 15 V
OUT
D Analog output voltage from DAC D
13 16 V
OUT
B Analog output voltage from DAC B
14 17 GND Ground reference point for all circuitry on the device
Serial data input. Data are clocked into or out of the input register. This pin is a bidirectional, open-
15 19 SDA
drain data line that should be connected to the supply voltage with an external pull-up resistor.
16 20 SCL Serial clock input. Data can be transferred at rates up to 3.4MHz. Schmitt-trigger logic input.
1 NC Not internally connected.
7 NC Not internally connected.
9 RSTSEL Reset select pin. RSTSEL high resets device to mid-scale; RSTSEL low resets device to zero-scale.
10 ADDR1 Three-state address input 1
18 NC Not internally connected.
Twos complement select. If the TWOC pin is pulled high, the DAC registers use twos complement
21 TWOC
format; if TWOC is pulled low, the DAC registers use straight binary format.
23 NC Not internally connected.
24 NC Not internally connected.
Copyright © 2010–2012, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Link(s): DAC7678